Data provided in this collection were gathered to evaluate
the effectiveness of a five-year program demonstrating regionalization
of perinatal health care for mothers and infants. There are three
distinct types of data in the collection. The first consists of records
of live births in eight program regions and eight comparison regions.
Included in these records are data on the size and type of institution
of birth, birthweight, number of previous births and pregnancies,
gestational age, and method of delivery. Also provided are demographic
data... (more info)

Data provided in this collection were gathered to evaluate
the effectiveness of a five-year program demonstrating regionalization
of perinatal health care for mothers and infants. There are three
distinct types of data in the collection. The first consists of records
of live births in eight program regions and eight comparison regions.
Included in these records are data on the size and type of institution
of birth, birthweight, number of previous births and pregnancies,
gestational age, and method of delivery. Also provided are demographic
data such as age, race, educational level, and marital status of the
mother. The unit of analysis is the live birth. The second type of data
in the collection consists of matched birth and death data for infants,
using the same geographical coverage as the live birth data. Each
record contains the data provided in the live birth data, plus
information such as the place of death, age at death, and cause of
death. The unit of analysis is infant deaths for which birth data are
available. The third type of data are derived from a survey of infant
health at one year of age. Included in this are data on employment,
education, and previous pregnancies of the mother, plus information on
pre- and post-natal hospitalization, medical care, and infant health.
Additional data are provided for a test, administered to each infant,
of adaptive, gross and fine motor, and receptive language development.

Access Notes

The public-use data files in this collection are available for access by the general public.
Access does not require affiliation with an ICPSR member institution.

Dataset(s)

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Universe:
For Live Birth and Matched Birth-Death data, the universe
consists of all live births and matching infant deaths in eight
demonstration areas and corresponding comparison areas. For the
One-Year Infant Health Survey the universe consists of all infants born
in designated six-month periods to residents of demonstration areas.
Demonstration areas are: New York City (Upper West Side of Manhattan),
Dallas County (Texas), Southeast Los Angeles (California), Central Los
Angeles, Coastal Los Angeles, Arizona, Oklahoma, and Ohio.

Data Types:
clinical data,
event/transaction data,
survey data

Data Collection Notes:

Because Live Birth and Matched Birth-Death data are
derived from data tapes provided by health departments, there are some
differences in the availability or format of data from different
geographical areas. Such differences have been eliminated to the extent
feasible by the principal investigators, and are noted in the codebook.
These data are released in the same form as provided by the principal
investigators. However, some variables have been recoded, at the
principal investigators' request, in order to maintain standards of
confidentiality. Affected variables include month of birth, place of
delivery, city of birth, city of residence, census tract of residence,
place of death (city), residence at death (city and census tract), and
month and day of death. Variables recoded for the Infant Health Survey
include interviewer information, hospital admission dates and names,
dates of accidents, illnesses, and most recent doctor visit, and length
of residence. Data users who wish to obtain tabulations that include
these variables may do so by special arrangement with ICPSR.

Methodology

Sample:
For Live Birth and Matched Birth-Death data, complete
health department records were used for the designated time periods
within each geographical area. The One-Year Infant Health Survey
utilized stratified random samples based on birth weight: nearly 100
percent of infant weighing less than or equal to 2,500 grams, and 3
percent of normal birth weight groups.

Data Source:

data tapes provided by state and local health
departments, and personal interviews

Version(s)

Original ICPSR Release:1986-11-07

Version History:

2006-01-12 All files were removed from dataset 78 and flagged as study-level files, so that they will accompany all downloads.

2006-01-12 All files were removed from dataset 78 and flagged as study-level files, so that they will accompany all downloads.